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  • 4,4'-Bis(diethylamino) benzophenone Manufacturer Factory CAS 90-93-7 Photoinitiator EMK

    Cas No: 90-93-7

  • USD $ 3.5-5.0 / Kiloliter

  • 5 Kiloliter

  • 3000 Metric Ton/Month

  • Chemwill Asia Co., Ltd.
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90-93-7 Usage

Chemical Properties


Flammability and Explosibility


Purification Methods

Crystallise the phenone from EtOH (25mL/g) and dry it under vacuum. Its picrate forms yellow needles from EtOH with m 178.5o. [Beilstein 14 II 59.]

Check Digit Verification of cas no

The CAS Registry Mumber 90-93-7 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 0 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 90-93:
57 % 10 = 7
So 90-93-7 is a valid CAS Registry Number.

90-93-7 Well-known Company Product Price

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  • Alfa Aesar

  • (B22288)  4,4'-Bis(diethylamino)benzophenone, 99%   

  • 90-93-7

  • 25g

  • 711.0CNY

  • Detail
  • Alfa Aesar

  • (B22288)  4,4'-Bis(diethylamino)benzophenone, 99%   

  • 90-93-7

  • 100g

  • 2223.0CNY

  • Detail
  • Aldrich

  • (160326)  4,4′-Bis(diethylamino)benzophenone  ≥99%

  • 90-93-7

  • 160326-25G

  • 1,010.88CNY

  • Detail
  • Aldrich

  • (160326)  4,4′-Bis(diethylamino)benzophenone  ≥99%

  • 90-93-7

  • 160326-100G

  • 3,140.28CNY

  • Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017


1.1 GHS Product identifier

Product name 4,4'-Bis(diethylamino) benzophenone

1.2 Other means of identification

Product number -
Other names Methanone, bis[4-(diethylamino)phenyl]-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:90-93-7 SDS

90-93-7Relevant articles and documents

Preparation method of tetraethyl michler's ketone


Paragraph 0019; 0072; 0075-0148, (2021/04/29)

The invention relates to a preparation method of tetraethyl Michler's ketone, which comprises the following steps: carrying out acylating chlorination reaction on N, N-diethylaniline and triphosgene as raw materials in a solvent to obtain a reaction intermediate product, then taking a supported catalyst containing Lewis acid as a catalyst, and carrying out reaction on the reaction intermediate product and the N, N-diethylaniline to obtain a target reaction product, namely tetraethyl michler's ketone. Side reactions can be effectively reduced, so that the yield of the target product is increased. After the reaction is finished, the catalyst is collected through solid-liquid separation, so that the separation efficiency is high, and subsequent cyclic utilization is facilitated.

Preparation method of tetraethyl michler's ketone


Paragraph 0020; 0023; 0026; 0029; 0031; 0032; 0033, (2018/03/26)

The invention provides a preparation method of tetraethyl michler's ketone. N, N'-diethyl aniline is taken as a raw material and is subjected to condensation with formaldehyde to obtain intermediate 4,4'-diphenyl methane (diphenylamine) diphenylmethane, and tetraethyl michler's ketone is obtained by oxidizing the intermediate. The preparation method has the advantages of cheap and available raw materials, low reaction temperature, good solubility of the reaction intermediate, good reaction yield, simple and convenient in operation and suitable for industrial production.



, (2008/06/13)

The present invention provides a compound represented by the following Formula (C1), or a colored curable composition containing a tetraazaporphyrin colorant having at least one group represented by the following Formula (I), and a color filter using the composition and a manufacturing method thereof: wherein Rc1: a halogen atom, aliphatic group, aryl group, heterocyclic group, cyano group, carboxyl group, carbamoyl group, aliphatic oxycarbonyl group, aryloxycarbonyl group, acyl group, hydroxyl group, aliphatic oxy group, aryloxy group, etc.; Zc1: a non-metal atom group necessary for forming a 6-membered ring together with the carbon atom; M: two hydrogen atoms, a divalent metal atom, divalent metal oxide, divalent metal hydroxide, divalent metal chloride; cm= 0 to 2, cn= 0, 1 to 5; cr1, cr2, cr3, cr4= 0 to 1 (cr1 + cr2 + cr3 + cr4 ≥ 1); L1: an alkylene group; A1 and A2: -O-, -C(=O)-, -OC(=O)-, -C(=O)O-, -N(R2)C(=O)-, -C(=O)N(R2)-, -N(R2)C(=O)-, -OC(=O)N(R2)-, N(R2)C(=O)N(R3)-, -N(R2)SO2-, -SO2N(R2)-, or -SO2-; L2: an alkylene group, aralkylene group, or arylene group; n: an integer from 1 to 3; m: an integer from 0 to 3; R1: a hydrogen atom, alkyl group, aryl group or heterocyclic group; and R2 and R3: a hydrogen atom, alkyl group, aryl group or heterocyclic group.

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